1201355530 has 16 divisors (see below), whose sum is σ = 2165460480. Its totient is φ = 479870992.

The previous prime is 1201355521. The next prime is 1201355549. The reversal of 1201355530 is 355531021.

It is a junction number, because it is equal to n+sod(n) for n = 1201355495 and 1201355504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76354 + ... + 90733.

It is an arithmetic number, because the mean of its divisors is an integer number (135341280).

Almost surely, 2^1201355530 is an apocalyptic number.

1201355530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201355530 is a deficient number, since it is larger than the sum of its proper divisors (964104950).

1201355530 is a wasteful number, since it uses less digits than its factorization.

1201355530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167813.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1201355530 is about 34660.5760194490. The cubic root of 1201355530 is about 1063.0585479390.

Adding to 1201355530 its reverse (355531021), we get a palindrome (1556886551).

The spelling of 1201355530 in words is "one billion, two hundred one million, three hundred fifty-five thousand, five hundred thirty".